In 1714, the British Parliament offered large rewards for finding longitude at sea. Men around the world submitted schemes but only one woman, Jane Squire, published a proposal under her own name. Dr Alexi Baker has been investigating the life story of this remarkable trailblazer.

It was the conundrum that baffled some of the greatest and most eccentric experts of the 18th century - and captivated the British public during an era of unprecedented scientific and technical transformation.

The forgotten story of the British organisation that enabled the development of a system for measuring Longitude, only to disappear from memory after its demise, is to be told in full for the first time.